Piston



Dec. 23, 1930. G. P. HEINER 1 1,785,903

PISTON Fil ed March 1a. 1929 g/e n. P jye/hgr claw Q 77 afmw PatentedDec. 23, 1930 UNITED STATES PATENT OFFICE GLEN P. HEINEB, OF SALT LAKECITY, UTAH PISTON Application filed March 18, 1929. Serial No. 347,795.

My invention relates to automobile engines ber E1 of the same internaldiameter as that and more particularly to all types of engines of thecylinder E and adapted to have the in which a piston is used for thecompression threaded portion of the member E threaded and power fromexplosion of gases or from into the upper'end of the said cylinder E1.

the expansion of vapors. This joins the skirt A to the piston head B 55A further object is to provide a new piston and makes an integral pistonthereof with the for internal combustion engines which will face 1 ofthe piston skirt engaging with the be removable from the connecting rodwithface 2 of the head B. Lugs 7 and 9 are formed out the bearing of theconnecting rod being on the top end'of the member E1 adapted to removedfrom the crank shaft of the engine. be brought into alignment with thelugs 6 and 60 A still further object is to provide a piston 8 and tapbolts 4 are then passed down which will have removable head thereon,said through the top of the piston head B through head being removed todisconnect the.conthe lugs 6 and 8 and into the lugs 7 and 9 necting rodfrom the wrist pin and the'rest securing the lugs together and insuringthat of the piston may then be removed from the the piston cannot beseparated by the action 65 cylinder. A new piston may then be fitted ofthe motor. The heads of the said bolts are into the cylinder or merelynew rings applied set into sockets 10 in the head of the piston. to theold piston and the piston again in- In Figure 3 of the drawings I haveshown ggrted, the cylindrical member E split at 15 to al- These objectsI accomplish with the device low for expansion and contraction and in 70illustrated in the accompanying drawings in Figures 4 and 8, I haveshown the cylindrical which similar numerals and letters of refermemberwith both sides removed leaving segence indicate like parts throughoutthe several ments E3 and E4: as the means of securing the views and asdescribed in the specification two pistons together, and I have alsoshown forming a part of this application and the lower end of themembers E3 and E4 not pointed out in the appended claim. threaded withonly the bolts 4 to hold the In the drawings I have shown the best andpiston head and the skirt together. most preferred manner of building myin- The operation of the device is as follows:

vention. Figure 1 is a side elevation of the To remove the piston fromthe connecting piston. Figure 2 is a section diametrically rod the bolts4 are removed from the lugs 6, 80 and longitudinally through the piston.Fig- 7 and 9 and the piston head then turned ure 3 is a section of theremovable head. Figuntil the threaded portions are free. The the 4 is asection of a modified form of rehead may then be removed so that thememovable head. Figure 5 is an inverted plan chanic can get at the topof the connecting view of the head shown in Figure 3. Figure rod todisengage the rod from the wrist pin 6 is an inverted plan view ofFigure 4. and when this is done the piston skirt A may In the drawings Ihave shown the skirt of then be removed;

the piston as A, the removable head as B, the To assemble the piston theskirt 1s placed ring grooves as C and the wrist pin bearings 1n thecylinder, the wrist pin connected with as D. The removable head and theskirt are the connecting rod andthe head B may then cylindrical in formand the removable head is be screwed into the skirt A and the bolts 4:closed on one end to form the piston head. placed to prevent themparting. When as- Centrally on the bottom side of the piston sembledtogether there is a cooling space behead I form a smaller cylindricalmember E tween the lower edges of the head B and the which member E isprovided with lugs 6 and upper edge of the skirt A. 9v 8 on the lowerouter edges thereof, and the Having thus described my ll'lVBIltlOl'l Idelower end of the said member E is threaded site to secure by LettersFatent and claim. at 8. Within the said skirt A and formed In aremovable head piston the combmaintegral with the inner ends of thewrist pin tion of a cyl ndrical skirt having a centrally bearings D, Iform another cylindrical memlocated vertically split cylindrical memberformed therein; a piston head havin a centrally located vertically splitcylindrical member formed therein; threads on the engaging ends of thetwo cylindrical members; 5 aligned lugs formed on the outer sidesthereof; and bolts adapted to be passed through the top of the pistonhead and skirt together.

In testimony whereof I have aflixed my signature. GLEN P. HEINER.

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